A National Park Service employee uses a pressure hose to help clean green paint from the Lincoln Memorial in Washington after it had been splattered on the statue early today which closed the popular attraction until later in the day, a U.S. Park police officer said, July 26, 2013.

A National Park Service employee uses a pressure hose to help clean green paint from the Lincoln Memorial in Washington after it had been splattered on the statue early today which closed the popular attraction until later in the day, a U.S. Park police officer said, July 26, 2013. (LARRY DOWNING / REUTERS)

North Korean soldiers salute as their leader Kim Jong-un (unseen) arrives for a mass gymnastic and artistic performance "Arirang", in Pyongyang July 26, 2013, as part of celebrations ahead of the 60th anniversary of the signing of a truce in the 1950-1953 Korean War.

North Korean soldiers salute as their leader Kim Jong-un (unseen) arrives for a mass gymnastic and artistic performance "Arirang", in Pyongyang July 26, 2013, as part of celebrations ahead of the 60th anniversary of the signing of a truce in the 1950-1953 Korean War. (JASON LEE / REUTERS)

Pope Francis greets faithfuls as he arrives on the Popemobile at the San Joaquin Episcopal Palace in Rio de Janeiro, Brazil, on July 26, 2013. Pope Francis will meet young convicts here and then return to Copacabana beach Friday where 1.5 million Catholics gathered on Rio de Janeiro's seafront...

Pope Francis greets faithfuls as he arrives on the Popemobile at the San Joaquin Episcopal Palace in Rio de Janeiro, Brazil, on July 26, 2013. Pope Francis will meet young convicts here and then return to Copacabana beach Friday where 1.5 million Catholics gathered on Rio de Janeiro's seafront... (GABRIEL BOUYS / AFP/Getty Images)

Demonstrators shows his chained hands as he stands in front of the Italian parliament with other people with mouth and hands tied to protest against homophobia in Rome's Piazza Montecitorio on July 26, 2013. Italy's lower house of Parliament began debating Tuesday a bill that would make...

Demonstrators shows his chained hands as he stands in front of the Italian parliament with other people with mouth and hands tied to protest against homophobia in Rome's Piazza Montecitorio on July 26, 2013. Italy's lower house of Parliament began debating Tuesday a bill that would make... (FILIPPO MONTEFORTE / AFP/Getty Images)